Membership
Tour
Register
Log in
John W. Chapman
Follow
Person
Stonehaven, GB
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Wellbore fluid
Patent number
9,574,127
Issue date
Feb 21, 2017
M-I Drilling Fluids UK Ltd.
John W. Chapman
E21 - EARTH DRILLING MINING
Information
Patent Grant
Viscosity reducer for water-based muds
Patent number
8,534,383
Issue date
Sep 17, 2013
M-I Drilling Fluids UK Limited
John W. Chapman
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Patents Applications
last 30 patents
Information
Patent Application
WELLBORE FLUID
Publication number
20150021027
Publication date
Jan 22, 2015
M-I DRILLING FLUIDS UK LIMITED
John W. Chapman
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
INVERT DRILLING FLUIDS
Publication number
20140182942
Publication date
Jul 3, 2014
M-I DRILLING FLUIDS UK LIMITED
Michael Hayward Hodder
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
VISCOSITY REDUCER FOR WATER-BASED MUDS
Publication number
20110042078
Publication date
Feb 24, 2011
M-I DRILLING FLUIDS UK LIMITED
John W. Chapman
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...